First you will need to visit Alvin. Alvin is in Lush Fields, follow the road north from Lush Hills Resort. After talking to him for a while and agreeing to help he will give you a mission to dismantle robots and bring back anything suspicious that you find.

These can be looted from any robot type mob, but the best to hunt are Mechdogs, and a good place to find these is at a junkyard just north east of Rome in Galway Shire(500x1000). If you don't feel this is a good place for you then the robots around Trash King in Athen Shire (1600 x 1000) or Bot Mountain in Greater Tir County (1650 x 2200) can be tried, but beware there is an extremely low drop-rate on these types of robots.

Once you have killed enough robots to find all eight parts, combine then together in order as below, there are no skills required to complete this.

This is exactly what Alvin was hoping you would find, so head back with it. Hand it to him and he will reward you with your new shoulderpads, also you will receive a Mission Token, a Bravery Token and some XP and credits for your efforts.

You will also recieve this card as a reward. Be sure to hold on to this, as you will need it when you do the Second Omni Shoulderpads Mission. If you lose it, you will have to do this mission over again.